git-annex/Command/ResolveMerge.hs
2015-01-21 12:50:09 -04:00

40 lines
1 KiB
Haskell

{- git-annex command
-
- Copyright 2014 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Command.ResolveMerge where
import Common.Annex
import Command
import qualified Git
import Git.Sha
import qualified Git.Branch
import Annex.AutoMerge
cmd :: [Command]
cmd = [command "resolvemerge" paramNothing seek SectionPlumbing
"resolve merge conflicts"]
seek :: CommandSeek
seek = withNothing start
start :: CommandStart
start = do
showStart "resolvemerge" ""
us <- fromMaybe nobranch <$> inRepo Git.Branch.current
d <- fromRepo Git.localGitDir
let merge_head = d </> "MERGE_HEAD"
them <- fromMaybe (error nomergehead) . extractSha
<$> liftIO (readFile merge_head)
ifM (resolveMerge (Just us) them)
( do
void $ commitResolvedMerge Git.Branch.ManualCommit
next $ next $ return True
, error "Merge conflict could not be automatically resolved."
)
where
nobranch = error "No branch is currently checked out."
nomergehead = error "No SHA found in .git/merge_head"